Shotac technology limited concentrated in providing high quality, Red Dot sight& Scopes, and high resolution rifle scope .We have been in this business since 2006 , did OEM production for some famous brand optics in USA and Europe . Shotac optics are very good quality and high class , Shotac red dot and rifle scope is not design for airsoft and air gun ,it is designed for 223 and 308 rifle .Shotac red dot sight , the water proof can high up to 2 hours 1 meter deep water, shock proof can up to 5000 round ammo , and usage life time can up to 5-10 years , shotac red dot is real high quality , same quality with some famous brand whose retail price is up to 400 USD or even higher Shotac rifle scope are high resolution , high precision , almost 0 parallax , it is a incredible feeling when you see the target through shotac rifle scope after you install in onto your rifle . Shotac optics are heavy duty and high quality , passed the test on many rifle , whatever .223, .300, .308, even .450 . If you want to choose a senior optics for your rifle, Shotac optics is best choice .